Home / 124,009.20-185,754.60-68,540.40

Finding the Fourth Proportional to 124,009.20, 185,754.60 and 68,540.40

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Solution

The fourth proportional to 124,009.20, 185,754.60 and 68,540.40 is: 102,667.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,009.20 : 185,754.60 = 68,540.40 : x
  2. Step 2: Convert to fraction form
    124,009.20/185,754.60 = 68,540.40/x
  3. Step 3: Cross multiply
    124,009.20x = 185,754.60 × 68,540.40
  4. Step 4: Simplify right side
    124,009.20x = 12,731,694,585.84
  5. Step 5: Solve for x
    x = 12,731,694,585.84/124,009.20
  6. Step 6: Final answer
    x = 102,667.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.